Hi Chickenmonster, I found out that there are even 3 series from Artur Jussupow. There is also "Tigersprung auf DWZ 1800". Unfortunately I dont know whether they are availible in English.
Artur Yusupuv / Artur Jussupow (Tigersprung)

Read this. It sounds like the English series of nine books by Artur is the same as Tigersprung (only translated).
http://www.qualitychess.co.uk/blog/?p=543
I wish to share my experience with Artur Yusupov’s award-winning training course “Tigersprung auf DWZ 1500-1800-2100″ in German language, or in English published by Quality Chess as:
a) Fundamentals (Build up your chess-Boost Your Chess-Chess Evolution)
b) Beyond the basics (Build up your chess-Boost Your Chess-Chess Evolution)
c) Mastery (Build up your chess-Boost Your Chess-Chess Evolution)
I’m proud owner of the following books:
a) Tigersprung auf DWZ 1500 / Band I & Band II
b) Tigersprung auf DWZ 1800 / Band I & Band II
c) Tigersprung auf DWZ 2100 / Band I & Band II
Yeah, they are the same. The german titles make the reading order easier to understand though. The ratings in the titles are probably the lowest level to start them (Tigersprong auf 1500 meaning something like leap from 1500), not where it is supposed to bring you.
I've now done 14/24 chapters of the first book in the past 2 weeks and I'd say some of the material will be really tough for a 1500. I'm certainly spending a few hours on most chapters. The tactical chapters are relatively easy (given 5 mins to calculate all lines, unlike the TT) for me, but I'm a 1700-1800 otb with 2100+ tactics here. Even a 2000+ (like the 2100 in your link) can probably benefit by just doing all the books instead of skipping.

Yes, it appears there has been a lot of confusion as to the correct order of reading the books that were translated into English. GIven the comments by Aargaard et al. in the link I provided above, as well as yours and other comments I have read, I think the 1700-2000-2200 paradigm (mentioned in the link) may be a bit more fitting.
Does anyone know if these are going to be available in English? I hear they are better than the other Yusupov series of nine books in English that people rave about.
Tigersprung auf DWZ 2100: Band 1 (Gebundene Ausgabe)
Artur Jussupow (Autor)
There are actually two series I am told: There are 2 series: 1. Tigersprung-1500 Elo and 2. Tigersprung 2100 Elo.